http://hdl.handle.net/2440/1087 2013-05-21T10:48:26Z 2013-05-21T10:48:26Z Adisa, Olumide Olayemi Cox, Barry James Hill, James Murray http://hdl.handle.net/2440/77863 2013-05-21T01:30:12Z 2011-12-31T13:30:00Z

Title: Modelling the adsorption of methane molecules into carbon nanotubes Author: Adisa, Olumide Olayemi; Cox, Barry James; Hill, James Murray Abstract: We investigate the prospect of methane gas storage in carbon nanotubes, and in particular we determine the interaction energy between a methane molecule and (9,5), (8,8) and (10,10) carbon nanotubes. Employing the Lennard-Jones potential together with the continuous approximation, we determine analytically the interaction energy for a methane molecule inside a carbon nanotube. Our results indicate that larger tubes are highly favoured sites for methane storage although smaller tubes might be superior for methane adsorption at higher temperatures, especially in the range of 400-500 K.

2011-12-31T13:30:00Z Peace, Marika McCaw, Lachlan Mills, G. http://hdl.handle.net/2440/77852 2013-05-20T06:30:18Z 2011-12-31T13:30:00Z

Title: Meteorological dynamics in a fire environment; a case study of the Layman prescribed burn in Western Australia Author: Peace, Marika; McCaw, Lachlan; Mills, G. Abstract: From time to time, bushfires exhibit fire behaviour that was never anticipated in the prevailing environmental conditions. The Layman fuel-reduction burn, in scenic southwest Western Australia, was one such fire. The burn was ignited in mid-October 2010 in benign weather conditions. Late morning on the day following ignition, fire activity escalated rapidly; a convection column developed with a deep vertical circulation that extended from the surface to a height of 4 km. The ensuing intense fire with tall flames caused extensive crown scorch and defoliation, and resulted in concerns about the safety of rural communities adjoining the planned burn. The observations and meteorological model data indicate that the intense fire activity was driven by a combination of meteorological processes not routinely assessed in fire environments. Low-level sea breeze convergence in the wind field, combined with potential instability in the presence of FireCAPE, entrainment of dry air from aloft desiccating already climatologically dry fuels and vertical circulation on a frontal change were all present. The dramatic development of the Layman burn shows how meteorological processes not currently embedded in fire science may produce an environment conducive to intense fire activity. The ways in which fire managers might incorporate innovative meteorological products identified in this paper in order to mitigate against such events in the future are discussed.

2011-12-31T13:30:00Z Landman, Kerry A. Binder, Benjamin James Newgreen, Donald Francis http://hdl.handle.net/2440/77797 2013-05-16T02:30:12Z 2011-12-31T13:30:00Z

Title: Modeling development and disease in our "second" brain Author: Landman, Kerry A.; Binder, Benjamin James; Newgreen, Donald Francis Abstract: The enteric nervous system (ENS) in our gastrointestinal tract, nicknamed the “second brain”, is responsible for normal gut function and peristaltic contraction. Embryonic development of the ENS involves the colonization of the gut wall from one end to the other by a population of proliferating neural crest (NC) cells. Failure of these cells to invade the whole gut results in the relatively common, potentially fatal condition known as Hirschsprung disease (HSCR). Cellular automata models provide insight into the colonization process at both the individual cell-level and population-level. Our models generated experimentally testable predictions, which have subsequently been confirmed. The model results imply that HSCR is chiefly a NC cell proliferation defect and not, as previously thought, a NC cell motility defect. These results have important implications for HSCR; namely stochastic effects can determine success or failure of the colonization process for a certain range of NC cell proliferation rates.

2011-12-31T13:30:00Z Zhang, Peng Chen, Weijiang Zhao, Zhongge http://hdl.handle.net/2440/77543 2013-05-08T04:30:13Z 2011-12-31T13:30:00Z

Title: Research of fuzzy recognition system for hydraulic support in working status with FEA analysis Author: Zhang, Peng; Chen, Weijiang; Zhao, Zhongge Abstract: In view of the disadvantages of monitoring for hydraulic support working status on the current fully mechanized coal face, a monitoring system of hydraulic support working status based on fuzzy recognition is applied. The mechanical system is designed and simulated by Finite Element Analysis (FEA) package. The control system is designed based on variable pressures in hydraulic support. Matlab©/Simulink© is applied in the system, it provides real-time monitoring function in modeling and testing. Fuzzy recognition method is used to obtain working status of hydraulic support. Finally, the working status of hydraulic support is displayed by finite state machine graphic tool Stateflow.

2011-12-31T13:30:00Z